I'd like to implement a lowpass with arbitrary slope. I'm currently cascading biquads in order to get a higher order, hence higher slope. But is it possible to do the opposite - lower the slope of one biquad? Normally one would be 12db/oct, so anything lower than that. Sort of mixing with dry signal, but without the phase cancellation. Hope that makes sense.
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2You want less slope than -12 dB per octave (or -40 dB per decade)? Certainly, with zeros beside the poles, you can get *less* performance. What are you trying to do? Pink noise? – robert bristow-johnson Apr 02 '23 at 21:58
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Could this type of design method be used with LPF : https://dsp.stackexchange.com/questions/29974/how-to-calculate-biquad-coefficients-for-the-partial-1-10-applying-of-pre-e/30086#30086 – Juha P Apr 03 '23 at 05:59